20578080

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1058

約数の個数: 96

約数和(自身を含む): 66394944

約数和(自身を除く): 45816864

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 80, 86, 96, 120, 129, 160, 172, 215, 240, 258, 344, 430, 480, 516, 645, 688, 860, 997, 1032, 1290, 1376, 1720, 1994, 2064, 2580, 2991, 3440, 3988, 4128, 4985, 5160, 5982, 6880, 7976, 9970, 10320, 11964, 14955, 15952, 19940, 20640, 23928, 29910, 31904, 39880, 42871, 47856, 59820, 79760, 85742, 95712, 119640, 128613, 159520, 171484, 214355, 239280, 257226, 342968, 428710, 478560, 514452, 643065, 685936, 857420, 1028904, 1286130, 1371872, 1714840, 2057808, 2572260, 3429680, 4115616, 5144520, 6859360, 10289040, 20578080]

約数ペア:

[(1, 20578080), (2, 10289040), (3, 6859360), (4, 5144520), (5, 4115616), (6, 3429680), (8, 2572260), (10, 2057808), (12, 1714840), (15, 1371872), (16, 1286130), (20, 1028904), (24, 857420), (30, 685936), (32, 643065), (40, 514452), (43, 478560), (48, 428710), (60, 342968), (80, 257226), (86, 239280), (96, 214355), (120, 171484), (129, 159520), (160, 128613), (172, 119640), (215, 95712), (240, 85742), (258, 79760), (344, 59820), (430, 47856), (480, 42871), (516, 39880), (645, 31904), (688, 29910), (860, 23928), (997, 20640), (1032, 19940), (1290, 15952), (1376, 14955), (1720, 11964), (1994, 10320), (2064, 9970), (2580, 7976), (2991, 6880), (3440, 5982), (3988, 5160), (4128, 4985)]